Self-discharging car



K. BARTH.

SELF DISCHARGING CAR. APPLICATION FILED JAN-15, 1921.

1,410, 154. Patented Mar. 21, 1922..

Fug/1. Fig.2.

UNITED STATES PATENT OFFICE.

KARL BARTH. OF ESSEN, GERMANY, ASSIGNOR TO FRIED. KRUPP AKTIENG-ESELL- SCHAFT, OF ESSEN-ONTHE-RUHR, GERMANY.

SELF-DISCHARGING CAR.

Specification of Letters Patent. Patented Mal. 2 1, 1922.

Application filed January 15,.1'921. Serial No. 437,571.

To all whom t m (07 con car n Be it known that l, KARL EARTH, residing at Essen. Germany s. citizen of the German Republic, have invented a certain new and useful Improvement in Self-Discharging Cars, (for which I have filed an application in Germany, April 2%, 1919,) of which the following is a specification.

This invention relates to self-discharging cars having a bottom adapted to tilt toward both sides. The object of the invention is to produce a spring arrangement for cars of this kind in which during the discharge movement of the bottom and entirely regardless whether the discharge be effected toward the one side or the other, always a portion of the mechanical work thereby released will be stored up in order to be utilized for the purpose of returning the said bottom into the loading position.

The invention will be further described with reference to the accompanying drawing which shows, by way of example, one em bodiment of the subject matter of the invention and in which:

Fig. 1 is a diagram disclosing a, cross sec tion through the car when ready for loading.

Fig. 2 is a section through the car after a discharge toward the left, and

Fig. 3 is a section through the car after a discharge toward the right. i

The arrangement of the gear elements serving to shift the bottom into the discharge position and then to return it into the loading position, does not form a feature of this invention and does not therefore require amore detailed explanation. Attention is only called to the fact, that there are arranged on the underframe A, symmetrically with respect to the middle longitudinal plane of the car crank arms B which, when the bottom C is in the loading position (Fig. 1), are capable of being fixed in a position in which-they are disposed in parallel to the middle longitudinal plane and which are connected to the bottom by a link D each, disposed in the same direction, and which link is capable of only rocking outwardly, relatively to the bottom, towards the middle line of the car.

On the underframe A and this on the outside of the longitudinal girders al there are mounted bell crank levers E E adapted to rock about an axis disposed in the longitudt nal direction of the under-frame. Each of the bell crank levers is adapted to'bear up with its shorter arm E against the respective ongitudinal girder o whereas with its longer arm IE it engages the one end of a tension spring F. The opposite end of each of said tension springs F is linked to the bottoniC ofithe car. When the ca'r'is ready for loading (Fig. 1), the springs F are tensionedto such a degree that the arms E of the bell crank levers, under the action of the springs F, will bear up with pressure against the longitudinal girders a When the car is to be dischargeditoward one side, say, for example, toward the 'left, then the crank arms B disposed to the left of the middle longitudinal plane of the car,

are turned fora slight amount inwards in the direction denoted by the arrow m in Fig,

1. Acting under the weight ofthe goods, the bottom C then automatically tilts toward the left and in so doing it turns about hinge connections serving to unite the right-hand crank arms B with their respective links I). As the discharging motion. sets in, firstlythe tension springs F arranged to the left of the-middle longitudinal plane of the car relax, and as the discharging motion continues the respective bell crank levers E E turn down 2), so that the springs will'now become inoperative. As Fig. 2 shows, the tension springs arranged to the right of the middle longitudinal plane of the car come to be considerably stretched during the discharging motion so that a part of the mechanical work done as the bottom passed over into the discharge position, is now stored, up in the said springs.

As the bottom is to be returned into the loading position, the crank arms B located to the left of the middle longitudinal plane of the car are rotated counter to the direction indicated by the arrow 00 (Fig. 1) back tensionand in so doing they give up again the mechanical work stored up within them, so that only a sli ht amount of power will be required to set tfie crank arms B in motion, this operation being-efiected by hand. The springs F arranged to the left of the middle longitudinal plane of the car and which during the described operation are not in tension, as also the bell crank levers E E connected thereto, are taken alo by the bottom C as this'latter returns into its original position until, as the said return movement terminates,=the arms E of the bell crank levers come to bear up against the lonitudinal girders a again, whereupon the ottom C, which continues its movement yet for a little space, slightly tensions the springs again.

I In what manner the bottom is discharged toward the right (Fig. 3) will not require anyfurther explanation after the fore .oing description, since the operations carrie out are, with a suitable variation, exactly the same as when the car is discharged toward the left. i

I claim:

1. A dumping receptacle comprising an underframe, atiltable bottom capable of rocking motion either way about a center, spring meanson either side of said bottom and connected to said bottom and to said underframe, and means for automatically releasing the spring tension on the dumping side of said bottom and increasing the ten} 86 sion on the opposite side.

2. A dumping receptacle comprising an underframe, a tiltable, bottom capable of rocking motion either way about a center, levers mounted on said underframe on either of said bottom and connected to said bottom and to said levers respectively, and abutment means for said levers fixing said levers relatively to said underframe when said botside of said bottom, springs on either side 1 tom rocks back a predetermined amount on its return to normal.

3. A dumping receptacle comprising an underframe, a tiltable bottom capable of rocking motion either way about a center, bell crank levers mounted on said underframe on either side of said bottom, springs connected to said bottom and toone arm of said bell-crank levers respectively, the other arms of said bell crank levers abutting' arm of said bellcrank levers respectively,

the other arms of said bell-crank levers abutting against said underframe when said bot tom rocks back a p edetermined amount on its return to normal.

5. A dumping receptacle comprising an underl'rame, a tiltable bottom capable of rocking motion either way, about a center, a

plurality of supporting link means on either side of said receptacle for collapsibly supporting said bottom when desired, spring means on either side of said bottom and connected to said bottom and to said underframe and means for automatically releasing the spring tension on the dumping side of said bottom and increasing the tension on the opposite side. l V I The foregoing specification signed at Essen, Germany, this 15th day of November, 1920.

p KARL BAR-TH. In presence of' I HANs Go'r'rsMANN, JOHANN DECKERS. 

